Erasure Code-Enabled Off-Chain Distributed Storage for Blockchain
Rong Sun, Xinru Wang, Jun Liu, Le Wang, Jingwei Liu, Lei Liu, M. Shamim Hossain, Shahid Mumtaz · 2025
In response to the rapid growth of data in cyberspace and the resulting challenge to storage capacity, this paper proposes a new off-chain storage scheme for blockchain based on erasure codes. The scheme allows for the application of different coding methods tailored to various scenarios. To validate its feasibility, an off-chain distributed storage test system built on the proposed framework is implemented. The test results demonstrate that the proposed scheme ensures blockchain data integrity from local and global perspectives reducing the system's repair bandwidth. This novel off-chain storage approach addresses blockchain's storage limitations and has the potential to enhance the overall robustness and reliability of the system.